git_repo = git.Repo.init(path_to_folder_with_no_working_tree, initial_branch="main")

git.exc.GitCommandError: Cmd('git') failed due to: exit code(129)
 cmdline: git init --initial-branch=main
 stderr: 'error: unknown option `initial-branch=main'
usage: git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]] [<directory>]

init_git(path_to_folder_with_no_working_tree)
def execute(*args, supress_exception=False, cwd=None):
 cur_dir = os.getcwd()
 try:
 if cwd:
 os.chdir(cwd)
 proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 out, err = proc.communicate()
 out = out.decode("utf-8")
 err = err.decode("utf-8")
 if err and not supress_exception:
 raise Exception(err)
 else:
 return out
 finally:
 os.chdir(cur_dir)
def init_git(project_directory):
 # workaround for issue #1
 if not os.path.exists(os.path.join(project_directory, ".git")):
 execute(
 "git",
 "config",
 "--global",
 "init.defaultBranch",
 "main",
 cwd=project_directory,
 )
 execute("git", "init", cwd=project_directory)